SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549



                                    FORM 8-K



                             Current Report Pursuant
                          to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934



    Date of report (Date of earliest event reported)    September 2, 1998
                                                        -----------------



                               UNOCAL CORPORATION
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             (Exact name of registrant as specified in its charter)



                                    Delaware
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                 (State or Other Jurisdiction of Incorporation)



    1-8483                                   95-3825062
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(Commission File Number)                (I.R.S. Employer Identification No.)



2141 Rosecrans Avenue, Suite 4000, El Segundo, California         90245
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(Address of Principal Executive Offices)                       (Zip Code)



                                 (310) 726-7600
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              (Registrant's Telephone Number, Including Area Code)



Item 5.           Other Events.


On August 31, 1998,  Judge Kim Wardlaw of the United States  District  Court for
the Central District of California ruled that Unocal  Corporation acted properly
during the course of the application and review for a patent on new reformulated
gasolines with the U.S. Patent and Trademark  Office.  This ruling concludes the
final phase of the trial of Unocal's suit against six other oil companies.

Earlier,  a District  Court jury upheld the  validity  of Unocal's  reformulated
gasolines  patent and awarded  the company  damages of 5-3/4 cents per gallon of
gasoline manufactured by the defendants that infringed on that patent.

During the earlier jury phase of the trial,  evidence presented showed that 1.19
billion gallons, or 29.1 percent of the total California  reformulated  gasoline
manufactured  by the  defendants  between  March 1,  1996,  and  July 31,  1996,
infringed on Unocal's patent. Of that, 60 percent was premium grade gasoline (92
octane or greater),  which  accounted  for about  one-fifth of the total gallons
manufactured. Based on the jury award of 5-3/4 cents per gallon, Unocal would be
entitled to  approximately  $69 million from the six oil company  defendants for
the five-month period.

Unocal will request an  accounting of  infringement  by the  defendants  for the
period from July 31, 1996, to the present,  seeking  damages for the  infringing
gallons produced by the defendants during the period.



Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned, thereunto duly authorized.


                                         UNOCAL CORPORATION
                                            (Registrant)


Date:  September 2, 1998                 By:  /s/  JOE D. CECIL
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                                              Joe D. Cecil
                                              Vice President and Comptroller

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